Home / 206,869.20-310,357.80-66,631.20

Finding the Fourth Proportional to 206,869.20, 310,357.80 and 66,631.20

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Solution

The fourth proportional to 206,869.20, 310,357.80 and 66,631.20 is: 99,964.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,869.20 : 310,357.80 = 66,631.20 : x
  2. Step 2: Convert to fraction form
    206,869.20/310,357.80 = 66,631.20/x
  3. Step 3: Cross multiply
    206,869.20x = 310,357.80 × 66,631.20
  4. Step 4: Simplify right side
    206,869.20x = 20,679,512,643.36
  5. Step 5: Solve for x
    x = 20,679,512,643.36/206,869.20
  6. Step 6: Final answer
    x = 99,964.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.